All

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 D13 Nucleic Acids, Nucleotides, and Nucleosides D009706 +
  D13.695 Nucleotides D009711 +
   D13.695.201 Deoxyribonucleotides D003854 +
    D13.695.201.100 Deoxyadenine Nucleotides D003838 
 D13 Nucleic Acids, Nucleotides, and Nucleosides D009706 +
  D13.695 Nucleotides D009711 +
   D13.695.667 Purine Nucleotides D011685 +
    D13.695.667.138 Adenine Nucleotides D000227 +
     D13.695.667.138.410 Deoxyadenine Nucleotides D003838